CN104602160B - A kind of digital sound box and attaching method thereof - Google Patents

A kind of digital sound box and attaching method thereof Download PDF

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Publication number
CN104602160B
CN104602160B CN201410689936.XA CN201410689936A CN104602160B CN 104602160 B CN104602160 B CN 104602160B CN 201410689936 A CN201410689936 A CN 201410689936A CN 104602160 B CN104602160 B CN 104602160B
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audio
audio signal
analog switch
sound box
digital sound
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CN104602160A (en
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李世煌
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SINGAPORE ZHENYUAN TECHNOLOGY CO., LTD.
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Singapore Zhenyuan Technology Co Ltd
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Publication of CN104602160A publication Critical patent/CN104602160A/en
Priority to PCT/CN2015/095318 priority patent/WO2016082728A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic System (AREA)

Abstract

The invention discloses a kind of digital sound boxes and attaching method thereof, the digital sound box has a multiplexing port that can be used as audio output or input, can be connected the multiplexing port of two digital sound boxes by audio signal wire can form stereo set speaker or the multiplexing port of multiple digital sound box connects to the speaker array to be formed and play same audio signal, the connection type of the speaker is simple, facilitate more people's shared musics and increases output power, it is usually used in the needs of party, multiple digital sound boxes can also be distributed on meeting-place and be created into uniform sound field.

Description

A kind of digital sound box and attaching method thereof
Technical field
The present invention relates to a kind of digital sound boxes and attaching method thereof.
Background technology
The common speaker of the prior art is to receive the audio letter sended over from intelligent terminal by inputting audio interface Amplify broadcasting after number again, or using two commonly from speaker and a main sound box, main sound box inputs audio interface by it and connects The audio signal sended over from intelligent terminal is received, after forming left channel audio signal and right channel audio signal after processing Audio interface is exported by it again respectively to export left channel audio signal and right channel audio signal to two commonly from speaker Audio signal is played back to be formed it is stereo, this two commonly from speaker signal only have input audio interface, this is general Logical main sound box has input audio interface and output two interfaces of audio interface.The audio interface of the common speaker all has unidirectional Property, i.e., it can only be used as audio input interface or audio output interface, connected and be must comply with corresponding interface and be linked in sequence, even It is next inconvenient to pick up, and needs the speaker number connected more.
The digital sound box of the prior art, although using, speaker more common than tradition is more convenient, its audio interface is still So there is one-way, if to realize multiple speakers while play a shared audio signal, there is still a need for by exporting sound Frequency interface and input audio interface are corresponding in turn to and connect, and the shared audio signal can only be defeated by a specific speaker Go out, other speakers are shared to play the audio signal, can not achieve shared audio signal and is exported by any one speaker, other speakers It is shared to play the audio signal.
Invention content
The present invention provides a kind of digital sound boxes and attaching method thereof, and which overcome the prior arts described in background technology Deficiency.
The present invention solves one of used technical solution of its technical problem:
There is a kind of digital sound box a multiplexing port, the multiplexing port can control it by a control signal and be used as sound Frequency input terminal mouth or audio output port, the speaker play itself audio signal or extraneous audio signals, extraneous audio letter Number it is that the audio signal of the speaker is input to by the multiplexing port, which can be exported by the multiplexing port.
Among one embodiment:It, should including digital audio module, power amplifier module, logic selecting switch and the first analog switch Digital audio module can with external equipment data connection and can send out control signal to control the multiplexing port as audio input Port or audio output port;
When the multiplexing port is as audio output port, which is sent to the logic by itself audio signal Selecting switch is amplified through power amplifier module to be played, which can also be sent to itself audio signal first simulation Switch is exported through multiplexing port;
When the multiplexing port is as audio input port, which selects through the first analog switch and logic successively It is exported by power amplifier module amplification after selecting switch;
The digital audio module can by data connection from external equipment receive original audio signal be used as the speaker from Body audio signal;
Among one embodiment:Further include the second analog switch, when the multiplexing port is as audio output port, the number sound Itself audio signal is sent to second analog switch and is exported by the multiplexing port through the first analog switch by frequency module;
Itself audio signal of second analog switch output that elects is left channel audio signal or right channel sound Frequency signal.
Among one embodiment:Further include third analog switch, when the multiplexing port is as audio output port, the number sound Frequency module by itself audio signal be sent to the third analog switch after logic selecting switch by the power amplifier module amplify play, And itself audio signal is sent to the third analog switch through the second analog switch, the first analog switch by the digital audio module It is exported afterwards by multiplexing port;
Whether the mixing of the third analog switch left and right sound channels signal for itself audio signal that elects.
Among one embodiment:The power amplifier module can be opened/be stopped control signal to control its unlatching or stop by one.
Among one embodiment:The logic selecting switch uses two-way four-way logic switch, first analog switch to use High-Speed Double-Channel analog switch.
Among one embodiment:Second analog switch uses High-Speed Double-Channel analog switch.
Among one embodiment:The third analog switch uses High-Speed Double-Channel analog switch.
Among one embodiment:Equipped with light source module, which connects the light source module and can be according to this itself Audio signal or extraneous audio signals modulate the illumination effect of the light source module.
Among one embodiment:Itself audio signal and extraneous audio signals all use differential mode to transmit.
Among one embodiment:It is additionally provided with USB interface and/or audio interface, the USB interface and/or audio interface connection should Digital audio module, the digital sound box can pass through the USB interface and/or audio interface data connection external equipment.
The present invention solve the used technical solution of its technical problem second is that:
Digital sound box described in one of a kind of connection method of digital sound box, including two schemes, passes through audio signal wire It will be connected between the multiplexing port of two digital sound boxes, the multiplexing port of one of digital sound box is as audio output The multiplexing port of port, another digital sound box is used as audio input port, and the audio letter that two digital sound boxes play automatically Number be respectively left channel audio signal and right channel audio signal, be formed as a pair of of stereo set speaker.
What the present invention solved the used technical solution of its technical problem three is:
Digital sound box described in one of a kind of connection method of digital sound box, including at least three schemes, is believed by audio Number line will connect between the multiplexing port of multiple digital sound box, and the multiplexing port of any of which digital sound box is as sound The multiplexing port of frequency output port, remaining digital sound box is used as audio input port automatically, and multiple digital sound box plays phase Same audio signal, is formed as speaker array.
Compared with the background art, it has the following advantages that the technical program:
1, a kind of digital sound box, there is a multiplexing port that can be used as audio output or input, the digital sound box can lead to for it Multiplexing port is switched to specific output port and input port by the audio signal for crossing automatic detection multiplexing port automatically, therefore, It need to will only be connected between the multiplexing port of two digital sound boxes by audio signal wire when with two digital sound boxes, i.e., A pair of of stereo set speaker can be formed;When at least three digital sound boxes, the multiplexing end of any of which digital sound box Mouth is used as audio output port, the multiplexing port of remaining digital sound box to be used as audio input port automatically, pass through audio signal wire The multiplexing port of multiple digital sound box is connected to form speaker array and play identical audio signal, wherein should Any one digital sound box all can serve as output port, and correspondingly remaining speaker translates into input port, i.e., any one The audio signal that speaker plays can obtain shared broadcasting on remaining speaker, and connection method is simple, and it is total to realize audio The expansion with audio output output power is enjoyed, more people's shared musics are facilitated and increases output power, is usually used in the needs of party, Multiple digital sound boxes can be distributed on meeting-place and be created into uniform sound field.
2, the digital sound box is equipped with light source module, which connects the light source module and can be according to itself sound Frequency signal or extraneous audio signals modulate the illumination effect of the light source module.Not only make the speaker simultaneously with according to audio Signal controls the function of light source luminescent effect, is also fully utilized by the interface resource of the digital audio module, without separately setting individually For the digital audio module of modulated light source module illumination effect, to reduce cost.
3, the power amplifier module can be opened/be stopped control signal to control its unlatching or stop, when the digital sound box needs temporarily by one When stopping playing audio signal, can be sent out to the power amplifier module stop control signal make its break-off reduce power consumption penalty, in the number When word tone case is by power supply power supplies such as batteries, the cruise duration of the digital sound box is improved.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 depicts a kind of circuit structure block diagram of digital sound box described in embodiment three.
Fig. 2 depicts digital audio module circuit diagram of the present invention.
Fig. 3 depicts the circuit diagram of logic selecting switch of the present invention.
Fig. 4 depicts the circuit diagram of audio power amplifier circuit of the present invention.
Fig. 5 depicts the circuit diagram of the first analog switch of the present invention.
Fig. 6 depicts the circuit diagram of the second analog switch of the present invention.
Fig. 7 depicts the circuit diagram of third analog switch of the present invention.
The speaker connection that Fig. 8 depicts the stereo set speaker of the present invention that there is two digital sound boxes to constitute is shown It is intended to.
Fig. 9 depicts the speaker connection signal of the speaker array of the present invention that there are at least three digital sound boxes to constitute Figure.
Specific implementation mode
Embodiment one:Fig. 2 is please referred to Fig. 6, Fig. 8:
A kind of digital sound box, there are one the multiplexing port that can be used as audio output or input, speakers can play itself sound for tool Frequency signal or extraneous audio signals, the extraneous audio signals are the audio signal that the speaker is input to by the multiplexing port, should Itself audio signal can be exported by the multiplexing port.
The digital sound box includes digital audio module 1, logic selecting switch 2, the first analog switch 3, the second analog switch 4 With power amplifier module 5.
The digital audio module 1 can be used for wireless receiving and be sent from external equipment (mobile phone, tablet computer, computer etc.) The original audio signal that comes over simultaneously plays the original audio signal as itself audio signal of the speaker or by multiple It is exported with port 6;The logic selecting switch 2 uses elect extraneous audio signals or itself audio signal as power amplifier module 5 Input signal and can also act as selecting itself audio signal L channel or right-channel signals as power amplifier module 5 input believe Number;First analog switch 3 uses the multiplexing port 6 that elects as input port or output port.In the present embodiment, the logic Selecting switch 2 uses two-way four-way logic switch (chip model NXP74HC4052PW), first analog switch 3, second Analog switch 4 all uses High-Speed Double-Channel analog switch (chip model SGM4717).
Wait for that routing path connects in the part that the audio signal output end of the digital audio module 1 connects the logic selecting switch 2 End and second analog switch 4 wait for routing path connecting pin, and the common end of the logic selecting switch 2 connects the power amplifier module 5 Input terminal, the common end of second analog switch 4 connect the one of first analog switch 3 and wait for routing path connecting pin, first mould The another of quasi- switch 3 waits for that routing path connecting pin connects another part of the logic selecting switch 2 and waits for routing path connecting pin, this first The common end of analog switch 3 connects the multiplexing port 6;
The digital audio module 1 can send out a control signal MUTE, be selected by the state 0 or 1 of control signal MUTE Itself audio signal led in the logic selecting switch 2 plays access or extraneous audio signals play access, simultaneously, moreover it is possible to pass through Control signal MUTE gates the correspondence access of first analog switch 3 to switch the multiplexing port 6 as output port or defeated Inbound port;The speaker is equipped with track selecting button, and a sound channel is triggered by the track selecting button on the manual operation speaker Selection signal L/R_SELE_1 (have state 0 or 1) gates the L channel of itself audio signal in the logic selecting switch 2 Or right channel plays access, simultaneously, moreover it is possible to pair of second analog switch 4 is gated by track selecting signal L/R_SELE_1 Access is answered to export itself audio signal with right channel or left channel audio signal.
When the digital audio module 1 detects multiplexing port no audio signal input, which sends out Signal MUTE (assuming that state is 0) is controlled, keeps multiplexing port 6 automatic at this point, first analog switch 3 corresponds to access and is strobed Switch to audio output port, which is gated itself audio signal and plays access;By operating on babinet Track selecting button triggers track selecting signal L/R_SELE_1 (state 0 indicates that right channel, state 1 indicate L channel), it is assumed that L channel is chosen, then the L channel that the logic selecting switch 2 gates itself audio signal plays access, second analog switch 4 gate right channel output (sound channel that can gate the second analog switch according to circuit design and the logic choosing of itself audio signal The sound channel for selecting switching gate is opposite).At this point, the audio signal flow direction when digital sound box works is as follows:The digital audio module 1 Itself audio signal (including left channel audio signal and right channel audio signal) is divided into two-way to send, this is sent to all the way and patrols Collect selecting switch 2 and through control signal MUTE above and output L channel itself sound after track selecting signal L/R_SELE_1 gatings Frequency signal amplifies through power amplifier module 5 to be played, i.e. itself audio signal of the L channel is played in the machine speaker, another way hair It gives second analog switch 4 and exports right channel itself audio signal again after above track selecting signal L/R_SELE_1 gatings It is exported by multiplexing port 6 after the first analog switch 3.
When the digital audio module 1 detects that the multiplexing port 6 has audio signal input, the digital audio module 1 hair Go out to control signal MUTE (assuming that state is 0), the broadcasting access of the extraneous audio signals of the logic selecting switch 2 is strobed and should First analog switch 3, which corresponds to access and is strobed, makes multiplexing port 6 be switched to audio input port automatically, at this point, the digital sound box Audio signal flow direction when work is as follows:The extraneous audio signals successively after the first analog switch 3 and logic selecting switch 2 by The amplification of power amplifier module 5 plays.
A kind of connection method of digital sound box, including the digital sound box 10 described in two the present embodiment, pass through audio signal Line will connect between the multiplexing port of two digital sound boxes, form a pair of of stereo combined speaker.Its operation principle is as follows: Any of which speaker is then used as automatically from speaker as main sound box, another speaker, it is assumed that the track selecting signal of main sound box L/R_SELE_1 selects L channel, the detection of digital audio module 1 of the main sound box that should pass through to the multiplexing port without audio input First analog switch 3 is chosen corresponding access multiplexing port 6 is switched to audio output port automatically by control signal MUTE, will be patrolled Volume selecting switch 2 is chosen plays access for itself audio signal, and the main sound box is original by its 1 wireless receiving of digital audio module Audio signal simultaneously exports itself audio signal (L channel itself audio signal and right channel itself audio signal), itself audio Signal amplifies broadcasting, itself sound via after selection L channel itself audio signal of logic selecting switch 2 by amplification module 5 all the way Frequency signal another way via the second analog switch 4 select right channel itself audio signal after through the first analog switch 3 from multiplexing end 6 output of mouth is extremely from speaker multiplexing port.Detect that its multiplexing port has audio signal, output control from the digital audio module of speaker Signal MUTE processed, and access is played for extraneous audio signals by being chosen from the logic selecting switch in speaker, at this time by the keynote Right channel itself audio signal of the multiplexing port output of case is the extraneous audio signals from speaker, extraneous audio signals warp Amplify through amplification module after first analog switch and logic selecting switch and play, is played respectively due to the main sound box and from speaker The audio signal of left and right sound channels, thus one group of stereo set speaker is constituted, which only needs two speakers , and need to only be connected its multiplexing port by a tone frequency channel wire, attended operation is quite convenient.
Embodiment two:Fig. 2 is please referred to Fig. 9:
On the basis of embodiment one, the digital sound box of the present embodiment further includes third analog switch 7, and third simulation is opened 7 are closed for selecting whether the left and right sound channels signal of itself audio signal mixes, the access selection of the third analog switch 7 is believed Press key control signal number on speaker, the third analog switch 7 use High-Speed Double-Channel analog switch (chip model for SGM4717).What the audio signal output end of the digital audio module 1 connected the third analog switch 7 waits for routing path connecting pin, Wait for routing path connecting pin and second mould in the part that the common end of the third analog switch 7 is separately connected the logic selecting switch 2 Quasi- switch 4 waits for routing path connecting pin.
When the multiplexing port 6 is as audio output port, which is sent to this by itself audio signal Third analog switch 7 to mix the audio signal of the left and right sound channels, select through the logic all the way by mixed mixed signal Selecting switch 2, (at this time no matter track selecting signal L/R_SELE_1 is that left channel signals or right-channel signals is chosen to export, this is patrolled The audio signal that volume switching circuit 2 exports is the mixed signal of the audio signal of the left and right sound channels) after by the power amplifier module 5 amplifications play, and mixed another way mixed signal is defeated by multiplexing port 6 after the second analog switch 4, the first analog switch 3 Go out.
A kind of connection method of digital sound box, including the digital sound box 20 described at least three the present embodiment, pass through audio Signal wire connects the multiplexing port of multiple digital sound box, forms speaker array.One of speaker is main sound box, Lingering sound case is from speaker, and the multiplexing port 6 of the main sound box is used as output port, remaining is used as defeated automatically from the multiplexing port of speaker Inbound port, main sound box and from the audio playing principles between speaker as in the first embodiment, only the present embodiment play audio believe Number be mixed audio signal, regardless of left and right sound channels audio signal, i.e., unrelated with track selecting signal L/R_SELE_1, main sound box Identical audio signal is played with from speaker, any one of the digital sound box to link together speaker all can serve as to lead Speaker, i.e., as the output end of audio signal, other digital sound boxes automatically become from speaker, and broadcasting is sent by the main sound box Audio signal.The speaker array facilitates audio signal shared or forms more people's videoconferences.
Embodiment three:Fig. 1 is please referred to Fig. 5:
Certain digital sound box can not also set the second analog switch and third analog switch, only include digital audio module 1, logic selecting switch 2, the first analog switch 3 and power amplifier module 5, the audio signal output end difference of the digital audio module 1 The part for connecting the logic selecting switch 2 waits for that the one of routing path connecting pin and first analog switch 3 waits for routing path connecting pin, should The common end of logic selecting switch 2 connects the input terminal of the power amplifier module 5, and the another of first analog switch 3 waits for that routing path connects It connects and the another part for connecting the logic selecting switch 2 is held to wait for routing path connecting pin, the common end connection of first analog switch 3 should Multiplexing port 6;
When the multiplexing port is as audio output port, which is sent to this by itself audio signal and patrols Volume selecting switch 2 is amplified through power amplifier module 5 to be played, the digital audio module 1 itself audio signal can also be sent to this One analog switch 3 is exported through multiplexing port 6;When the multiplexing port 6 is as audio input port, which passes through successively Amplified by power amplifier module 5 after first analog switch 3 and logic selecting switch 2 and is exported.In the present embodiment, it can only fix the number One of L channel or right channel audio signal output end of audio-frequency module 1 are connected to the one of first analog switch 3 and wait for Routing path connecting pin, but still can trigger track selecting signal L/R_SELE_1 by the track selecting button on this speaker Left channel signals or right-channel signals access to select logic selecting switch 2 are come with other voice box groups into stereo combination sound box Or speaker array, if this be fixedly attached to the first analog switch 3 be digital audio module 1 L channel output end, then can The selection signal L/R_SELE_1 is gated for right channel, the digital sound box is made to constitute stereo set with another speaker Selection signal L/R_SELE_1 can also be gated for L channel by speaker, make the digital sound box and remaining several voice box group audio Case array.
Differential mode biography all can be used in the transmission process of audio signal described in embodiment one, embodiment two and embodiment three It is defeated, enhance the anti-interference of audio signal and increases the connection distance between each speaker.
The digital sound box of one preferred embodiment is also provided with light source module, which connects the light source module And the illumination effect of the light source module can be modulated according to itself audio signal or extraneous audio signals, keep the speaker simultaneous simultaneously With the function of controlling light source module illumination effect according to audio signal, the interface resource of digital audio module is taken full advantage of.
The power amplifier module can be opened/be stopped control signal to control its unlatching or stop by one.This opens/stops control signal and may be from Digital audio module in digital sound box one is opened/is stopped by the external equipments such as mobile phone are sent when digital audio module is received When controlling signal (broadcasting/pause), which, which transfers to send to power amplifier module, opens/stops accordingly control signal, when the sound Case saves digital sound box power consumption, when the digital sound box uses without that when playing out audio signal, can stop power amplifier module work When the power supplys such as battery are powered, the cruise duration of the digital sound box can be extended;This opens/stops control signal and may also originate from the external world Inductive signal, by the way that an inductor, such as infrared sensor are arranged in the speaker, when the infrared sensor senses infrared letter Number when (such as someone when), which automatically turns on, and when being not sensed by infrared signal, which, which is automatically closed, stops Only work.
It is additionally provided with USB interface and audio interface on the digital sound box of one preferred embodiment, the USB interface and/or audio connect Mouthful the digital audio module is connected, which can be general earphone audio interface, and the digital audio module is not But can be received other than the original audio signal from external equipment from the wireless connection of foundation, can also by USB interface or Auxiliary audio frequency port receives the original audio signal of external equipment.
Digital audio module in a kind of digital sound box of the present invention can be Bluetooth audio frequency module or WIFI sounds Frequency module etc. has the control module for receiving, handling and send audio signal function.
A kind of digital sound box of the present invention, circuit structure is simple, has audio input/output multiplexing port, passes through The multiplexing port realizes the connection between the digital sound box, and connection method is simple, can realize played in stereo and multiple speakers Audio play simultaneously, realize music sharing and increase sound output, especially suitable more people's videoconferences, more people chat lie prone it is poly- Tens speakers, can also be distributed on meeting-place, create uniform sound field by the occasion of meeting.For example, when more people's videoconferences, Multiple digital sound box is connected into speaker array by audio signal wire, attend a meeting member everyone can be transferred through smart mobile phone with Corresponding digital sound box, which is established, to be wirelessly connected, by the operation (such as operation broadcasting/stop key) of smart mobile phone by audio signal It is transmitted to corresponding digital sound box, the digital sound box becomes main sound box at this time, other speakers are used as from speaker and the intelligence is played simultaneously The audio signal that mobile phone is conveyed, similarly, one digital sound box of any of which all can serve as main sound box and come from intelligent hand to receive The audio signal of machine, then be transmitted to remaining speaker and play out, in entire videoconference, message, sound are played by speaker Sound is louder and clearer, clearly, improves meeting efficiency.
The above, only present pre-ferred embodiments, therefore cannot limit the scope of implementation of the present invention according to this, i.e., according to Equivalent changes and modifications made by the scope of the claims of the present invention and description all should still belong in the range of the present invention covers.

Claims (10)

1. a kind of digital sound box, it is characterised in that:With a multiplexing port, which can pass through a control signal control It plays itself audio signal or extraneous audio signals as audio input port or audio output port, the speaker, this is outer It is that the audio signal of the speaker is input to by the multiplexing port to carry out audio signal, which can pass through the multiplexing end Mouth output;
Including digital audio module, power amplifier module, logic selecting switch and the first analog switch, the digital audio module can with it is outer Device data is connect to connect and control signal can be sent out to control the multiplexing port as audio input port or audio output port;
When the multiplexing port is as audio output port, which is sent to the logic by itself audio signal and selects Switch amplifies through power amplifier module to be played, which can also be sent to itself audio signal first analog switch It is exported through multiplexing port;
When the multiplexing port is as audio input port, which opens through the first analog switch and logic selection successively Amplified by power amplifier module behind pass and is exported;
The digital audio module can receive itself sound that original audio signal is used as the speaker by data connection from external equipment Frequency signal;
Further include the second analog switch, when the multiplexing port is as audio output port, the digital audio module is by itself audio Signal is sent to second analog switch and is exported by the multiplexing port through the first analog switch;
Itself audio signal of second analog switch output that elects is left channel audio signal or right audio channel letter Number;
Further include third analog switch, when the multiplexing port is as audio output port, the digital audio module is by itself audio Signal is sent to the third analog switch and amplifies broadcasting, and the digital audio module by the power amplifier module after logic selecting switch It is defeated by multiplexing port after the second analog switch, the first analog switch that itself audio signal is sent to the third analog switch Go out;
Whether the mixing of the third analog switch left and right sound channels signal for itself audio signal that elects.
2. a kind of digital sound box according to claim 1, it is characterised in that:The power amplifier module can be opened/be stopped control letter by one Number come control its open or stop.
3. a kind of digital sound box according to claim 1, it is characterised in that:The logic selecting switch uses two-way four-way Logic switch, first analog switch use High-Speed Double-Channel analog switch.
4. a kind of digital sound box according to claim 1, it is characterised in that:Second analog switch uses High-Speed Double-Channel Analog switch.
5. a kind of digital sound box according to claim 1, it is characterised in that:The third analog switch uses High-Speed Double-Channel Analog switch.
6. a kind of digital sound box according to claim 1, it is characterised in that:Equipped with light source module, the digital audio module It connects the light source module and the illumination effect of the light source module can be modulated according to itself audio signal or extraneous audio signals.
7. a kind of digital sound box according to claim 1, it is characterised in that:Itself audio signal and extraneous audio signals All differential mode is used to transmit.
8. a kind of digital sound box according to claim 1, it is characterised in that:It is additionally provided with USB interface and/or audio interface, The USB interface and/or audio interface connect the digital audio module, which can be connect by the USB interface and/or audio Mouth data connection external equipment.
9. a kind of connection method of digital sound box as described in claim 1, it is characterised in that:Including two digital sound boxes, It will be connected between the multiplexing port of two digital sound boxes by audio signal wire, the multiplexing end of one of digital sound box Mouth is used as audio output port, the multiplexing port of another digital sound box to be used as audio input port, and the two numbers word tone automatically The audio signal that case plays is respectively left channel audio signal and right channel audio signal, is formed as a pair of of stereo set sound Case.
10. a kind of connection method of digital sound box as described in claim 1, it is characterised in that:Including at least three numbers Speaker will be connected, any of which digital sound box by audio signal wire between the multiplexing port of multiple digital sound box Multiplexing port as audio output port, the multiplexing port of remaining digital sound box is used as audio input port automatically, and this is more A digital sound box plays identical audio signal, is formed as speaker array.
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